/* =========================================================
   bet36看台 · /assets/site.css
   共享外壳样式：reset / 变量 / 头部 / 页脚 / 通用组件
   ========================================================= */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { background: none; border: 0; color: inherit; font: inherit; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
img, svg, video { max-width: 100%; display: block; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; }

/* ---------- tokens ---------- */
:root {
  --ink: #0B1A33;
  --panel: #12294A;
  --lift: #1C3A63;
  --moss: #2E7D6B;
  --moss-lit: #4FB39B;
  --signal: #FF6B2C;
  --amber: #FFA23A;
  --stone: #8A93A0;
  --mist: #C7CDD6;
  --bone: #F2EFE9;
  --clay: #B9614A;

  --line: rgba(199, 205, 214, 0.16);
  --line-soft: rgba(199, 205, 214, 0.075);

  --rail-w: 300px;
  --pad: clamp(20px, 3.6vw, 44px);
  --radius: 2px;

  --font-display: "Arial Narrow", "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Consolas, "Courier New", monospace;

  --speed: 320ms;
}

/* ---------- base ---------- */
body {
  min-height: 100vh;
  padding-left: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
  background-color: var(--ink);
  background-image:
    radial-gradient(920px 520px at 88% -12%, rgba(46, 125, 107, 0.20), transparent 72%),
    radial-gradient(680px 420px at -8% 108%, rgba(255, 107, 44, 0.09), transparent 72%),
    linear-gradient(to right, rgba(199, 205, 214, 0.042) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(199, 205, 214, 0.042) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { line-height: 1.22; color: var(--bone); }
strong { color: var(--bone); }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -90px;
  z-index: 400;
  padding: 10px 18px;
  background: var(--signal);
  color: #180B03;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: top 160ms ease;
}
.skip-link:focus { top: 16px; }

/* =========================================================
   HEADER — 框架式导航：左侧竖直固定栏即页面视觉边框
   ========================================================= */
.rail {
  position: sticky;
  top: 0;
  z-index: 110;
  background: linear-gradient(180deg, #0A1730 0%, #0C1D39 100%);
  border-bottom: 1px solid var(--line);
  padding-top: 3px;
}

.rail__progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 130;
  pointer-events: none;
  background: linear-gradient(90deg, var(--moss) 0%, var(--moss-lit) 52%, var(--signal) 100%);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 90ms linear;
}

.rail__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px var(--pad);
  border-bottom: 1px solid var(--line-soft);
}

.rail__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.rail__brand-mark {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #06231C;
  background: var(--moss-lit);
  padding: 5px 7px;
  border-radius: var(--radius);
}
.rail__brand-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.rail__brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--bone);
  line-height: 1.15;
}
.rail__brand-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--stone);
  line-height: 1.2;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.08em;
  transition: border-color 180ms ease, color 180ms ease;
}
.nav-toggle:hover { border-color: var(--moss-lit); color: var(--moss-lit); }
.nav-toggle__bars { position: relative; display: block; width: 16px; height: 10px; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform 200ms ease;
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.rail[data-open] .nav-toggle__bars::before { transform: translateY(4.25px) rotate(45deg); }
.rail[data-open] .nav-toggle__bars::after { transform: translateY(-4.25px) rotate(-45deg); }

.rail__panel {
  display: none;
  max-height: calc(100vh - 78px);
  overflow-y: auto;
  padding: 16px var(--pad) 26px;
  border-bottom: 1px solid var(--line);
}
.rail[data-open] .rail__panel { display: block; }

.rail__block { margin-top: 20px; }
.rail__block:first-child { margin-top: 4px; }

.rail__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--stone);
  margin-bottom: 10px;
}

/* 版本切换 */
.ver-switch {
  display: flex;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.ver-switch__btn {
  flex: 1;
  padding: 10px 4px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--stone);
  transition: color 180ms ease, background 180ms ease;
}
.ver-switch__btn + .ver-switch__btn { border-left: 1px solid var(--line); }
.ver-switch__btn:hover { color: var(--bone); background: rgba(79, 179, 155, 0.10); }
.ver-switch__btn.is-current {
  background: var(--signal);
  color: #180B03;
  font-weight: 700;
}
.ver-note {
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

/* 站内定位检索 */
.rail-search {
  width: 100%;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--bone);
  font-size: 14px;
  font-family: var(--font-body);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}
.rail-search::placeholder { color: var(--stone); }
.rail-search:focus {
  border-color: var(--moss-lit);
  box-shadow: 0 0 0 3px rgba(79, 179, 155, 0.16);
}

.rail-hits { margin-top: 10px; display: flex; flex-direction: column; gap: 2px; }
.rail-hit a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  font-size: 13.5px;
  color: var(--mist);
  border-left: 2px solid transparent;
  border-radius: 1px;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}
.rail-hit a:hover {
  background: rgba(79, 179, 155, 0.10);
  border-left-color: var(--moss-lit);
  color: var(--bone);
}
.rail-hit.is-hit a {
  border-left-color: var(--signal);
  background: rgba(255, 107, 44, 0.11);
  color: var(--bone);
  transform: translateX(2px);
}
.rail-hit__meta {
  flex: none;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--stone);
}
.rail-hits__empty {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--amber);
}

/* 主导航 */
.rail__list { display: flex; flex-direction: column; gap: 1px; }
.rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14.5px;
  color: var(--mist);
  border-left: 2px solid transparent;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease;
}
.rail__link::before {
  content: "";
  flex: none;
  width: 6px; height: 6px;
  background: var(--lift);
  transform: rotate(45deg);
  transition: background 160ms ease;
}
.rail__link:hover { color: var(--bone); background: rgba(199, 205, 214, 0.055); }
.rail__link[aria-current="page"] {
  color: var(--bone);
  border-left-color: var(--signal);
  background: linear-gradient(90deg, rgba(255, 107, 44, 0.18), transparent 88%);
}
.rail__link[aria-current="page"]::before { background: var(--signal); }

/* 状态灯 */
.rail__block--signal {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}
.signal-lamp {
  flex: none;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--moss-lit);
  animation: lamp-pulse 2.6s ease-out infinite;
}
@keyframes lamp-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(79, 179, 155, 0.50); }
  70%  { box-shadow: 0 0 0 9px rgba(79, 179, 155, 0); }
  100% { box-shadow: 0 0 0 0 rgba(79, 179, 155, 0); }
}
.signal-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--stone);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* =========================================================
   FOOTER
   ========================================================= */
.foot {
  margin-top: clamp(40px, 7vw, 88px);
  padding: clamp(38px, 6vw, 72px) var(--pad) 26px;
  background: linear-gradient(180deg, rgba(10, 23, 48, 0.9) 0%, #08122A 100%);
  border-top: 1px solid var(--line);
}

.foot__inner {
  display: grid;
  gap: 34px;
  max-width: 1260px;
  margin: 0 auto;
}

.foot__brand {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--bone);
}
.foot__brand:hover { color: var(--moss-lit); }
.foot__summary {
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}
.foot__stamp {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.foot__cols {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.foot__col { min-width: 0; }

.foot__coltitle {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--moss-lit);
}

.foot__list { display: flex; flex-direction: column; gap: 9px; }
.foot__list a {
  font-size: 14px;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}
.foot__list a:hover { color: var(--moss-lit); border-bottom-color: var(--moss-lit); }
.foot__mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--mist);
  word-break: break-all;
}

.foot__contact { min-width: 0; }
.foot__addr {
  margin-top: 14px;
  max-width: 32ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}
.foot__hours {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.foot__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  max-width: 1260px;
  margin: clamp(30px, 5vw, 54px) auto 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}
.foot__legal {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

/* =========================================================
   通用组件
   ========================================================= */
.wrap {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: clamp(28px, 4.5vw, 60px) var(--pad);
}

.grid { display: grid; gap: clamp(14px, 1.8vw, 22px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.panel--lift {
  background: var(--lift);
  border-color: rgba(79, 179, 155, 0.30);
}
.panel--cut-l { clip-path: polygon(26px 0, 100% 0, 100% 100%, 0 100%, 0 26px); }
.panel--cut-r { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%); }

.divider {
  height: 1px;
  margin: clamp(28px, 4vw, 48px) 0;
  background: linear-gradient(90deg, var(--moss) 0%, rgba(46, 125, 107, 0.12) 62%, transparent 100%);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--moss-lit);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--stone);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.chip--signal { border-color: rgba(255, 107, 44, 0.5); color: var(--signal); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}
.btn--signal { background: var(--signal); color: #180B03; }
.btn--signal:hover { background: var(--amber); transform: translateY(-2px); }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--bone); }
.btn--ghost:hover { border-color: var(--moss-lit); color: var(--moss-lit); transform: translateY(-2px); }
.btn--quiet { padding: 8px 0; color: var(--stone); }
.btn--quiet:hover { color: var(--bone); }

/* 图片容器（页面阶段直接放置 img / picture） */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(46, 125, 107, 0.26), rgba(11, 26, 51, 0.72) 58%),
    var(--panel);
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(199, 205, 214, 0.07) 0 1px, transparent 1px 6px);
}
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media--wide { aspect-ratio: 21 / 9; }
.media__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 5px 9px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #06231C;
  background: var(--moss-lit);
}

/* 面包屑 */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--stone);
}
.crumbs li { display: flex; align-items: center; gap: 8px; }
.crumbs li + li::before { content: "›"; color: var(--lift); }
.crumbs a:hover { color: var(--moss-lit); }

/* 长文 */
.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}
.prose p + p { margin-top: 1.1em; }
.prose h2 {
  margin-top: 2em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  color: var(--bone);
}
.prose ul { margin-top: 1em; padding-left: 1.25em; list-style: disc; }
.prose li { margin-top: 0.4em; }
.prose a { color: var(--moss-lit); border-bottom: 1px solid rgba(79, 179, 155, 0.4); }
.prose a:hover { color: var(--bone); border-bottom-color: var(--bone); }

/* 动态状态条 */
.state-toast {
  position: fixed;
  left: 50%;
  top: 14px;
  z-index: 200;
  margin: 0;
  padding: 9px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: #180B03;
  background: var(--signal);
  border-radius: var(--radius);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -150%);
  transition: transform 260ms ease, opacity 260ms ease;
}
.state-toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* 回到顶部 */
.to-top {
  position: fixed;
  right: clamp(16px, 2.4vw, 28px);
  bottom: clamp(16px, 2.4vw, 28px);
  z-index: 100;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  font-size: 16px;
  line-height: 1;
  color: var(--bone);
  background: var(--lift);
  border: 1px solid rgba(79, 179, 155, 0.4);
  border-radius: var(--radius);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 220ms ease, transform 220ms ease, background 180ms ease;
}
.to-top.is-on { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--moss); }

/* 滚动显现 */
.js-reveal [data-reveal] { opacity: 0; transform: translateY(16px); }
.js-reveal [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity var(--speed) ease, transform var(--speed) ease;
}

/* =========================================================
   响应式
   ========================================================= */
@media (min-width: 560px) {
  .foot__cols { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
  .foot__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 38px 44px; }
  .foot__brandcol { grid-column: 1 / -1; }
}

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .rail {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    padding-top: 0;
    border-bottom: 0;
    border-right: 1px solid var(--line);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--lift) transparent;
  }
  .rail::-webkit-scrollbar { width: 6px; }
  .rail::-webkit-scrollbar-thumb { background: var(--lift); border-radius: 3px; }

  .rail__progress { left: var(--rail-w); height: 2px; }

  .rail__top { padding: 30px 24px 22px; border-bottom: 0; }
  .rail__brand-name { font-size: 20px; }

  .nav-toggle { display: none; }

  .rail__panel {
    display: block;
    flex: 1;
    max-height: none;
    overflow: visible;
    padding: 0 24px 30px;
    border-bottom: 0;
  }
  .rail__block { margin-top: 26px; }
  .rail__block:first-child { margin-top: 0; }

  .foot { padding-left: var(--pad); }
  .foot__inner { grid-template-columns: 1.15fr 2fr 1.15fr; gap: 48px; }
  .foot__brandcol { grid-column: auto; }
}

@media (min-width: 1280px) {
  .rail__brand-name { font-size: 21px; }
}

/* =========================================================
   降低动效偏好
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js-reveal [data-reveal] { opacity: 1 !important; transform: none !important; }
  .rail__progress { transition: none; }
}